Some crushed ice for a WIP - ignore the crappy box... any thoughts?

 #declare Ice_Mat =
 material {
  texture {
   pigment {rgbf <1,1,1,0.9>}
   normal {granite 1 scale 5}
   finish {
    diffuse 0.75
    specular 0.75
    roughness 0.01
     reflection {fresnel}
     //metallic
     conserve_energy
   }
  }
  interior {
   ior 1.4
   media{method 3 scattering{1, 0.35 extinction 1}}// density{wrinkles}}
  }
 }

 #declare IS1 = 2;
 #declare F_Ice = function(x,y,z) {
  z
  - f_ridged_mf(x*IS1,y*IS1,0, 0, 2.5, 4, 2, 5, 2)/5
  + f_noise3d(x,y,0)
  -1
 }

 height_field{
  function 100,100 {F_Ice(x*10,y*14,0)}
  scale<10,1/2,14>
  material{Ice_Mat}
  hollow
  translate<-5,0,-7>
 }

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Attachments:
Download 'ci_01.JPG' (40 KB)

Preview of image 'ci_01.JPG'

Tom Melly wrote:
> Some crushed ice for a WIP - ignore the crappy box... any thoughts?
> 
>  #declare Ice_Mat =
>  material {
>   texture {
>    pigment {rgbf <1,1,1,0.9>}
>    normal {granite 1 scale 5}
>    finish {
>     diffuse 0.75
>     specular 0.75
>     roughness 0.01
>      reflection {fresnel}
>      //metallic
>      conserve_energy
>    }
>   }
>   interior {
>    ior 1.4
>    media{method 3 scattering{1, 0.35 extinction 1}}// density{wrinkles}}
>   }
>  }
> 
>  #declare IS1 = 2;
>  #declare F_Ice = function(x,y,z) {
>   z
>   - f_ridged_mf(x*IS1,y*IS1,0, 0, 2.5, 4, 2, 5, 2)/5
>   + f_noise3d(x,y,0)
>   -1
>  }
> 
>  height_field{
>   function 100,100 {F_Ice(x*10,y*14,0)}
>   scale<10,1/2,14>
>   material{Ice_Mat}
>   hollow
>   translate<-5,0,-7>
>  }
> 
> 
> 
Colour and texture looks dead on for all but the snowyest of crushed 
ice. In other words once it has set for a few minutes.  I guess I am 
more used to seeing varients on cubed ice for so long now that I have a 
hard time picturing true crushed ice.

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My only impression is that it isn't bright enough. The deli i get coffee at
in the morning has a big sink/well/pit (for lack of a better term) for
crushed ice that they put the lunch platters on. It seems to catch the light
and really hold on to it. Where your ice has a dozens of small points of
white highlights, theirs is probably almost all white with a a little fall
off, but very bright highlights. The shape of your ice looks pretty good,
but maybe a little too much like glass shards.

i think it's great though, maybe about 95% there. Maybe it's even better
than that and a real scene with real lighting would bring it the rest of the
way. I'm looking forward to the end result.

-ross

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In article <42121570$1@news.povray.org>, rli### [at] everestkcnet says...
> My only impression is that it isn't bright enough. The deli i get coffee at
> in the morning has a big sink/well/pit (for lack of a better term) for
> crushed ice that they put the lunch platters on. It seems to catch the light
> and really hold on to it. Where your ice has a dozens of small points of
> white highlights, theirs is probably almost all white with a a little fall
> off, but very bright highlights. The shape of your ice looks pretty good,
> but maybe a little too much like glass shards.
> 
> i think it's great though, maybe about 95% there. Maybe it's even better
> than that and a real scene with real lighting would bring it the rest of the
> way. I'm looking forward to the end result.
> 
> -ross
> 

Yes, this looks more like this stuff:

http://www.biconet.com/soil/hydrogel.html

When they have absorbed enough water they take on a look similar, but not 
quite like that of ice. More or less exactly like what your image shows. 
Its not far off what you wanted, just not quite right. I would say it 
looks too "wet", like partly melted slush, rather than ice.
-- 
void main () {

    call functional_code()
  else
    call crash_windows();
}

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